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Online Tests
Chemistry Fsc Part 1 Chapter 4 Online Test MCQs With Answers
Question # 1
The nature of copper crystals is
Choose an answer
Metallic
Ionic
Covalent
Molecular
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Question # 2
The boiling point of pure water at 1 atm pressure is.
Choose an answer
98
o
C
100
o
C
69
o
C
120
o
C
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Question # 3
Which pair of molecule have Debye forces in them
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Ar and Ar
Argon and water
Na+ ions and water
water and water
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Question # 4
A pressure cooker reduces cooking time because.
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Heat is uniformly distributed
Boiling point of water rises
A large flame is used
Vapour pressure of liquid reduces
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Question # 5
The repulsion of electronic clouds of the molecules are responsible for the attractive forces among the molecules. These forces are
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Dipole-induced dipole forces
Ion-dipole forces
Instantaneous dipole-induced dipole forces
Dipole-dipole forces
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Question # 6
The process in which liquid can be made to boil at low temperature in known as .........distillation
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Simple
Thermal
Steam
Vacuum
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Question # 7
London dispersion force are the only forces present among the.
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Molecules of water in liquid state
Atoms of helium in gaseous state at high temperature
Molecule of solid iodine
Molecules of hydrogen chloride gas
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Question # 8
In which , case particles are separated from each other.
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Fusion
Condensation
Neutralizations
Vaporization
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Question # 9
In order to mention the B.P of water at 110
o
C the external pressure should be.
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Between 760 torr and 1200 torr
Between 200 torr and 760 torr
765 torr
Any value of pressure
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Question # 10
Molecular crystals are generally
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Hard
Relatively soft
Unstable
do not exist
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Question # 11
Diamond is a bad conductor because.
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It has tight structure.
It has a high density
There is no free electron present in the crystal of diamond to conduct electricity
None of the above
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Question # 12
Which substances has diffused melting point.
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Crystalline solids
Amorphous solids
Metallic solids
Covalent solids
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Question # 13
The molecules of CO
2
in dry ice form the
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Ionic crystal
Covalent crystals
Molecular crystals
Any type of crystals
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Question # 14
Crystal to diamond is.
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Ionic
Molecular
Covalent
Metallic
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Question # 15
When water freezes, its volume increase.
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12%
9%
15%
18%
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Question # 16
NH3 shows a maximum boiling point among the hydrides of the group V elements due to.
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Very small size of nitrogen
Long pair of electrons present on nitrogen
Enhanced electronegative character of nitrogen
Pyramidal structure of NH3
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Question # 17
Conductivity of metal decreases by increasing temperature because.
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Atoms are converted to ions
Atoms oscillates and hinder the movement of free electrons.
Ions are converted into atoms
Velocity of mobile electrons increases
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